139
edits
Multiplayer protocol: Difference between revisions
Jump to navigation
Jump to search
updated and added xdr information
(Updated table of properties from 3.2.0 source, https://gitorious.org/fg/flightgear/source/cbc8b26df7cae0ea467305463aa0ca9a3db8ebaa:src/MultiPlayer/multiplaymgr.cxx#L68-240) |
(updated and added xdr information) |
||
| Line 3: | Line 3: | ||
All messages are composed of XDR encoded data. (see [http://www.faqs.org/rfcs/rfc1832.html RFC 1832] for a complete description of XDR). XDR basically means: All data is in network byte order and aligned to the nearest multiple of 4 bytes. Strings are encoded as a zero-terminated array of characters,aligned to the nearest multiple of 4 bytes. Floating point numbers (32 or 64 bit) must be encode in the IEEE standard. | All messages are composed of XDR encoded data. (see [http://www.faqs.org/rfcs/rfc1832.html RFC 1832] for a complete description of XDR). XDR basically means: All data is in network byte order and aligned to the nearest multiple of 4 bytes. Strings are encoded as a zero-terminated array of characters,aligned to the nearest multiple of 4 bytes. Floating point numbers (32 or 64 bit) must be encode in the IEEE standard. | ||
FlightGear uses XDR encoded messages that are sent via UDP. | |||
== Resources == | |||
The routines for handling XDR are contained in $FG_SRC/Multiplayer/tiny_xdr.[h|c]xx: | |||
http://gitorious.org/fg/flightgear/blobs/next/src/MultiPlayer/tiny_xdr.cxx | |||
The different message types supported by the MP protocol are specified in $FG_SRC/MultiPlayer/mpmessages.hxx: | |||
http://gitorious.org/fg/flightgear/blobs/next/src/MultiPlayer/mpmessages.hxx | |||
The multiplayer system code: | |||
https://gitorious.org/fg/flightgear/blobs/next/src/MultiPlayer/multiplaymgr.cxx | |||
eXternal Data Representation (XDR): | |||
http://en.wikipedia.org/wiki/External_Data_Representation | |||
== The header == | == The header == | ||